Has anyone tried out the USB Tethering option in the settings? Is this something that we can use for free or would we be charged for turning it on? I was thinking of using my phone's data as a secure line for me to make purchases and such when I'm visiting families and friends. I found some posts on the Sprint forums that says we are legally allowed to tether even without paying for the hotspot plan and also using third-party sources. I'm just curious if this built-in system for tethering is free or if I have to go looking around on the market for something suitable.